diff options
Diffstat (limited to 'board/k+p/kp_imx6q_tpc/kp_imx6q_tpc.c')
| -rw-r--r-- | board/k+p/kp_imx6q_tpc/kp_imx6q_tpc.c | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc.c b/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc.c new file mode 100644 index 00000000000..9a5b88029f8 --- /dev/null +++ b/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc.c @@ -0,0 +1,302 @@ +/* + * K+P iMX6Q KP_IMX6Q_TPC board configuration + * + * Copyright (C) 2018 Lukasz Majewski <lukma@denx.de> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/arch/clock.h> +#include <asm/arch/crm_regs.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/iomux.h> +#include <asm/arch/mx6-pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/gpio.h> +#include <asm/io.h> +#include <asm/mach-imx/boot_mode.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <errno.h> +#include <fsl_esdhc.h> +#include <fuse.h> +#include <i2c.h> +#include <miiphy.h> +#include <mmc.h> +#include <net.h> +#include <netdev.h> +#include <usb.h> +#include <usb/ehci-ci.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define ENET_PAD_CTRL \ + (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ + PAD_CTL_HYS) + +#define I2C_PAD_CTRL \ + (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ + PAD_CTL_HYS | PAD_CTL_ODE | PAD_CTL_SRE_FAST) + +#define PC MUX_PAD_CTRL(I2C_PAD_CTRL) + +static struct i2c_pads_info kp_imx6q_tpc_i2c_pad_info0 = { + .scl = { + .i2c_mode = MX6Q_PAD_CSI0_DAT9__I2C1_SCL | PC, + .gpio_mode = MX6Q_PAD_CSI0_DAT9__GPIO5_IO27 | PC, + .gp = IMX_GPIO_NR(5, 27) + }, + .sda = { + .i2c_mode = MX6Q_PAD_CSI0_DAT8__I2C1_SDA | PC, + .gpio_mode = MX6Q_PAD_CSI0_DAT8__GPIO5_IO26 | PC, + .gp = IMX_GPIO_NR(5, 26) + } +}; + +static struct i2c_pads_info kp_imx6q_tpc_i2c_pad_info1 = { + .scl = { + .i2c_mode = MX6Q_PAD_KEY_COL3__I2C2_SCL | PC, + .gpio_mode = MX6Q_PAD_KEY_COL3__GPIO4_IO12 | PC, + .gp = IMX_GPIO_NR(4, 12) + }, + .sda = { + .i2c_mode = MX6Q_PAD_KEY_ROW3__I2C2_SDA | PC, + .gpio_mode = MX6Q_PAD_KEY_ROW3__GPIO4_IO13 | PC, + .gp = IMX_GPIO_NR(4, 13) + } +}; + +int dram_init(void) +{ + gd->ram_size = imx_ddr_size(); + return 0; +} + +/* + * Do not overwrite the console + * Use always serial for U-Boot console + */ +int overwrite_console(void) +{ + return 1; +} + +#ifdef CONFIG_FEC_MXC +static iomux_v3_cfg_t const enet_pads[] = { + IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | + MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | + MUX_PAD_CTRL(ENET_PAD_CTRL)), + /* AR8031 PHY Reset */ + IOMUX_PADS(PAD_ENET_CRS_DV__GPIO1_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL)), +}; + +static void eth_phy_reset(void) +{ + /* Reset AR8031 PHY */ + gpio_direction_output(IMX_GPIO_NR(1, 25), 0); + mdelay(10); + gpio_set_value(IMX_GPIO_NR(1, 25), 1); + udelay(100); +} + +static int setup_fec_clock(void) +{ + struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; + + /* set gpr1[21] to select anatop clock */ + clrsetbits_le32(&iomuxc_regs->gpr[1], 0x1 << 21, 0x1 << 21); + + return enable_fec_anatop_clock(0, ENET_50MHZ); +} + +int board_eth_init(bd_t *bis) +{ + SETUP_IOMUX_PADS(enet_pads); + setup_fec_clock(); + eth_phy_reset(); + + return cpu_eth_init(bis); +} + +static int ar8031_phy_fixup(struct phy_device *phydev) +{ + unsigned short val; + + /* To enable AR8031 output a 125MHz clk from CLK_25M */ + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7); + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016); + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007); + + val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe); + val &= 0xffe3; + val |= 0x18; + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val); + + /* introduce tx clock delay */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5); + val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e); + val |= 0x0100; + phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val); + + return 0; +} + +int board_phy_config(struct phy_device *phydev) +{ + ar8031_phy_fixup(phydev); + + if (phydev->drv->config) + phydev->drv->config(phydev); + + return 0; +} +#endif + +#ifdef CONFIG_FSL_ESDHC + +#define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4) +static struct fsl_esdhc_cfg usdhc_cfg[] = { + { USDHC2_BASE_ADDR }, + { USDHC4_BASE_ADDR }, +}; + +int board_mmc_getcd(struct mmc *mmc) +{ + struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; + + switch (cfg->esdhc_base) { + case USDHC2_BASE_ADDR: + return !gpio_get_value(USDHC2_CD_GPIO); + case USDHC4_BASE_ADDR: + return 1; /* eMMC/uSDHC4 is always present */ + } + + return 0; +} + +int board_mmc_init(bd_t *bis) +{ + int i, ret; + + /* + * According to the board_mmc_init() the following map is done: + * (U-Boot device node) (Physical Port) + * mmc0 micro SD + * mmc2 eMMC + */ + gpio_direction_input(USDHC2_CD_GPIO); + + usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); + usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK); + + for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) { + ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]); + if (ret) + return ret; + } + + return 0; +} +#endif + +#ifdef CONFIG_USB_EHCI_MX6 +static void setup_usb(void) +{ + /* + * Set daisy chain for otg_pin_id on MX6Q. + * For MX6DL, this bit is reserved. + */ + imx_iomux_set_gpr_register(1, 13, 1, 0); +} + +int board_usb_phy_mode(int port) +{ + if (port == 1) + return USB_INIT_HOST; + else + return USB_INIT_DEVICE; +} + +int board_ehci_power(int port, int on) +{ + switch (port) { + case 0: + break; + case 1: + gpio_direction_output(IMX_GPIO_NR(3, 31), !!on); + break; + default: + printf("MXC USB port %d not yet supported\n", port); + return -EINVAL; + } + + return 0; +} +#endif + +int board_early_init_f(void) +{ +#ifdef CONFIG_USB_EHCI_MX6 + setup_usb(); +#endif + + return 0; +} + +int board_init(void) +{ + struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + /* address of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + + /* Enable eim_slow clocks */ + setbits_le32(&mxc_ccm->CCGR6, 0x1 << MXC_CCM_CCGR6_EMI_SLOW_OFFSET); + + setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &kp_imx6q_tpc_i2c_pad_info0); + setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &kp_imx6q_tpc_i2c_pad_info1); + + return 0; +} + +#ifdef CONFIG_CMD_BMODE +static const struct boot_mode board_boot_modes[] = { + /* 4 bit bus width */ + {"sd2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)}, + /* 8 bit bus width */ + {"emmc", MAKE_CFGVAL(0x60, 0x58, 0x00, 0x00)}, + {NULL, 0}, +}; +#endif + +int board_late_init(void) +{ +#ifdef CONFIG_CMD_BMODE + add_board_boot_modes(board_boot_modes); +#endif + + env_set("boardname", "kp-tpc"); + env_set("boardsoc", "imx6q"); + return 0; +} + +int checkboard(void) +{ + puts("Board: K+P KP_IMX6Q_TPC i.MX6Q\n"); + return 0; +} |